Each "Cloak" has restrictions and conditions to keep the gameplay balanced and I would assume it would be the same in GRFS.
No, what makes the core concept interesting is the ability to approach a large encounter zone and then tackle it as you deem fit, backed up by smart squad AI. It depends on assessing the enemy strength and location then determining the kill order (if you want to engage I.e.). The addition of a CQC system only re-enforces this as you are encouraged to take out key guards and set yourself up for attacks/ambush.
The inviso cloak allows for a period of planning with certain impunity in order to get the most out of the tactical situation.
Nevertheless, From what I have seen...I don't think it will surpass OGR....not even remotely. I hope I am wrong,